Check the listing for details. INTERCHANGEABLE ELECTRODES/LEAD CABLE~2 EAR CLIP ELECTRODES + 3.5mm LEAD + PADS. Condition: New. Listed at 18.89 USD. INTERCHANGEABLE ELECTRODES/LEAD CABLES~2 EAR CLIP ELECTRODES + 3.5mm LEAD CABLE + 2 Square Pads (please be sure your plug input matches 3.5mm plug)This is a variety interchangeable combo that can work 2 ways, which allows you to use either -the lead cable with 2mm connectors to connect to 2mm female input electrodes (included) OR -you can connect the ear clamp electrodes to the lead cable and make it an ear clamp lead line/electrode set They are compatible with numerous EMS & TENS units on the market. Between treatments, it is recommended that the Ear Clip Electrode be kept clean and dry. Electrode Lead cable specs: ---Electrode wire length : about 1.20 ~1.30 m ---2 pin ---head/plug diameter: 3.50 mm ---pin diameter: about 2.